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December 21, 2014

December 21, 2014

Posted by **beckii** on Thursday, November 15, 2007 at 8:01pm.

A) write an equation showing the relationship between the rates at which the volume of the balloon is changing while the radius is changing?

B. write an equation showing the relationship between the rates at which the volume of the ablloon is changing while the area is changing?

C. at what rate is the radius increasing when the volume of the balloon is 972pi incles?

- calc -
**bobpursley**, Thursday, November 15, 2007 at 8:08pmStart with

V=4/3 PI r^3 then take the derivative of each side with respect to time

dV/dt= 4/3 PI * 3r^2 dr/dt

Now do the same with the surface area equation.

For the last, what is radius when V is 972? Put that r into the dV/dt equation.

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